15 Crazy Twists In Big Brother History

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8. Twin Twist

Everybody loves a twin twist! Seen for the first time in Season 5, it's one of the show's most fun twists. If the twins can keep their secret safe—or rely on alliances to keep them in the game, like Julia and Liz managed to do in Season 17—until week five, both twins are able to enter the house and play the game as individuals.